Answer:
blastocyst / blastula forms
Answer:
Human Life Cycle. Human Life Cycle mainly consists of 6 stages. They are simply; foetus, baby, child, adolescent, adult and old person.
Explanation:
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Answer: A or C
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Fresh water is any body of water with a low salt concentration. Organisms in fresh water various challenges which includes; Osmotic concentration such that fresh water is permanently dilute and most cells cannot function at this concentration of ions. Varying temperatures, variation in oxygen levels and reproduction and life cycle due to permanence of habitat and physiological difficulty of regulating osmotic concentration in larvae and juveniles.
I think it would be the first ones with lower o2 because fish dont breathe oxygene